Service bulletins for the 2027 Peterbilt 548
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
5 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Brakes are shown. Show all
| 26PACF | 2026-10-17. Service bulletin. SERVICE BRAKES. Certain Model 548 chassis equipped with tri-drive brake piping are non-compliant with Federal MotorVehicle Safety Standard (FMVSS) 121 / Canadian Motor Vehicle Safety Standard (CMVSS) 121 rearservice brake application, rear service brake release, and trailer gladhand application times. A vehiclethat does not meet these brake timing requirements could present an increased risk of a crash or injury. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.